Low constant current source

Thread Starter

embedded.world

Joined Feb 27, 2014
38
Low constant current source

Is there any low constant current source available like less than 20uA.

I had find some of sources but minimum of 100uA from TI.



(Was not able to post question with subject line)
 

BobTPH

Joined Jun 5, 2013
8,765
Depends on the accuracy and compliance range you need, a voltage source + resistor might work.

For example. If the load will require 0.1 to 1V at constant 20uA, you could use a 20V source + a 1Meg resistor to make a 5% accuracy 20uA current source.

Bob
 
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